package com.muse.aaa;

import java.util.HashMap;

public class NodeAaa {
    public static void main(String[] args) {
        HashMap<String, String> student = new HashMap();
        student.put("name", "muse");
        student.put("city", "北京");
    }

    public Object data;

    public void setData(Object data) {

        this.data = data;
    }
}
